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CAED Shop Entrance Wall Redesign
Get PDFThis paper details the preconstruction process involving the replacement and redesign of the north wall at the CAED Support Shop at Cal Poly, San Luis Obispo. Accomplished by an interdisciplinary team of Architectural Engineering and Construction Management students, this project explores the requirements and procedures of generating a project proposal to submit to Cal Poly Facilities Management. The project, initiated in the fall of 2024, aimed to redesign the wall aligned with the adjacent Engineering West building and replace it with a CMU low lift grouted wall. The CAED Support Shop is offered as a resource to all CAED students to have access to construction tools to work on projects for their classes as well as personal use. By rebuilding the north wall, it will allow students to have a safe space to work on these projects while also increasing the aesthetic appeal of the courtyard. This project offers an immersive, hands-on experience that will improve their skills in project planning, design integration, and construction execution. The goal of the CM student is to complete the project initialization for the new CMU wall for the Support Shop Entrance. The goal for the team is to complete documentation for the Cal Poly Facilities requirements, ensuring compliance with permit regulations. This includes the finalization of all documentation necessary for obtaining permits, in addition to planning the phasing and scheduling of the project to minimize downtime for the Support Shop
Design and Assembly of a Variable Buoyancy System for an Autonomous Underwater Vehicle
Get PDFAutonomous underwater vehicles (AUVs) play a vital role in the surveillance and mapping of our oceans, often requiring extensive travel in extreme environments. These data-gathering missions benefit from extended durations, making the minimization of power consumption a key consideration in AUV design. One effective strategy to reduce energy use in AUVs is to implement a variable buoyancy system (VBS) for depth control. The purpose of this work is to design, develop, test, and model a variable buoyancy system to enhance the efficiency and capabilities of a high-speed, long-range AUV.
After evaluating various VBS designs, a piston-cylinder buoyancy system was selected and developed. A prototype was produced, featuring two manually controlled piston-cylinder units housed within a cylindrical acrylic shell. This setup was tested at shallow depths, successfully demonstrating the VBS’s ability to achieve depth control and its potential for additional functionalities such as orientation control. A Simulink model of the system was also created to simulate its performance. The results from these simulations were compared to both theoretical calculations and experimental data. This model is then used to establish a framework for the design of a depth controller for the VBS once integrated onto an AUV
Real-Time Network Simulations for Ml/Dl Ddos Detection Using Docker
Get PDFAs the integration of artificial intelligence (AI) within cybersecurity continues to
grow, machine learning (ML) and deep learning (DL) models are increasingly used to
detect cyber attacks. However, these models are rarely evaluated in real-time attack
scenarios to see how subtle changes from the real networking environment can affect
their predictions. To address this issue, we propose a scalable, platform-independent
Docker testbed specifically designed for simulating real-time Distributed Denial of
Service (DDoS) attack scenarios that allows researchers to deploy and evaluate their
pre-trained, ML and DL detection models. Our framework is simple to configure
and can run across Intel and ARM CPUs, as well as Windows, Linux, and MacOS
operating systems. The testbed was validated with our six pre-trained models in
a 10-minute DDoS attack simulation, where performance metrics such as resource
consumption were actively monitored across different operating systems and CPUs.
This Dockerized environment offers researchers an accessible and flexible solution for
testing and improving DDoS detection models in a realistic, real-time context
The Application of Generative AI for Sketch-to-Image Conversion
Get PDFSketches have historically been the primary way to identify individuals when images are unavailable. Most commonly, this appears in a police investigation, where the police release a sketch to the public in an attempt to find a suspect. However, sketches occasionally do not provide much detail due to the limitations of both the witness and the artist. A poor sketch greatly hinders the public’s ability to identify someone, decreasing the chances they will be found. To improve upon this inefficient way of identifying individuals, we propose a new pipeline that leverages deep generative artificial intelligence models to create detailed images of them. Our approach is a two-step process: the initial formulation of an image and the iterative improvement of it. The pipeline first utilizes a sketch and a text description to generate an initial image. Then, the user can continually make changes to this image, modifying facial features, skin color, hair color, etc. until the image matches their mental picture. This enables both a stronger match between the image and the user’s memory as well as an increase in identifiability, as an image provides more details than a sketch. The pipeline was evaluated on the Illinois Department of Corrections (IDOC) dataset, which contains images and text descriptions of around 70,000 individuals. With our sketch-to-image model, we achieved a Fréchet inception distance (FID) score of 56.86, a distance metric between generated and real images. We additionally received overwhelmingly positive feedback during user testing. This work can be utilized by government agencies to make communities safer and search and rescue organizations to find lost individuals
Effects of Concrete with the Implementation of Spent Coffee Grounds
Get PDFDuring this study, compression tests were performed on three different concrete mix designs to evaluate the effects of spent coffee grounds as an admixture. The initial mix design was the control mix, composed of a general concrete mix design containing aggregate, cement, and water. The second mixture utilized was high strength concrete; this included aggregate, cement, and water, fly ash. The third mixture tested consisted of aggregate, cement, water, and spent coffee grounds. The purpose of evaluating these three different mixtures is to see whether spent coffee grounds can be implemented into concrete without compromising the compressive strength. Substituting 15% of the cement with spent coffee grounds would reduce the greenhouse gas and carbon footprint impact of cement and spent coffee grounds. These tests were comprised of a 7-day, 14-day, and 28-day cure in a controlled environment. The results of the tests showed that the implementation of spent coffee grounds in concrete would not be a suitable admixture, displaying a significant decrease in compressive strength. Due to human error, there was an absence of considering the water to cement ratio and it was not adjusted implying that there may need to be further testing to accurately evaluate the effects of spent coffee ground
The Viability of Styrofoam Beads in Concrete Mixtures
Get PDFThis experiment revolved around the idea that an aggregate replacement in a concrete mixture could not only maintain its structural integrity but increase its sustainability as well. This idea was formulated into the experiment of embedding Styrofoam beads into concrete. The outcome of this experiment showed the compressive strength of the concrete increased the greatest with the substitution of Styrofoam beads for fine aggregate up to 20%. This 20% Styrofoam replacement mixture exhibited an 189% increase in compressive strength when compared to the control group in the third week of testing. In addition to this impressive compressive strength, the weight of the 20% replacement mixture was 7.7% lighter on average than the control group. Unexpectedly, the mixtures gained slump with each iteration of Styrofoam addition, becoming visibly wetter and more workable. This was attributed to the unabsorbant nature of the Styrofoam beads
Beyond the Box: Delivering a New Look to Ohayo Korea
Get PDFOhayo Korea, a newly established business in South Korea, specializes in providing buying, packing, consolidation, and forwarding services for international customers seeking exclusive South Korean products or bulk shipments for business purposes. Despite offering valuable services, The business faces significant challenges in establishing visibility and trust in the marketplace. Currently, the business relies primarily on word-of-mouth and minimal social media presence, which restricts its reach and credibility among potential customers. In a highly competitive market, these constraints hinder Ohayo Korea’s ability to stand out and communicate its unique offerings effectively.
To address these challenges, a cohesive brand identity that resonates with an international audience is essential. Without a professional and recognizable online presence, potential customers may perceive the company as lacking reliability—a concern heightened by its dependence on remote transactions. Additionally, language and cultural differences create further barriers, making it crucial for the business to adopt visual and experiential branding elements that bridge these gaps and build trust. Through a comprehensive rebranding strategy that incorporates experiential marketing, emotional branding, and a user-centered approach, this project seeks to reposition the brand as a professional and trustworthy entity, ultimately fostering customer loyalty, increasing engagement, and supporting sustainable growth in the international market
The Waterbug: Adaptive Paddle Board Frame
Get PDFPeople with disabilities, particularly wheelchair users, face limitations in participating in outdoor activities like paddleboarding. Central Cal Adaptive, a nonprofit organization, aims to bridge this gap by offering adapted paddleboarding experiences. However, their current paddleboard presents challenges such as portability, range of motion, stability, and safety. Our team, comprising Madeline Evenson, Remy Lacchia, Katie Kellum, and Shelbi Sullaway, has collaborated with Central Cal Adaptive to refine the existing paddleboard design. The team’s goal is to enhance the paddleboard\u27s functionality to better cater to wheelchair users\u27 needs, ensuring lightweight, portable, and safe features for an improved outdoor experience.
Our paddleboard concept design consists of four different parts. The outriggers attached to our main frame connect to four separate pontoons. The securing mechanism will attach the frame to the paddleboard; this consists of two clamp-like features that will grip the sides of the board and connect by a ratchet strap. The guiderails ensure that the wheelchair and user’s center of mass remain consistent with the board’s center of mass. Attached to the guiderails is a rotational seat component that will allow for the user to attach a seat so that they may be sitting at board level. The final component is the ramp system, which is a 6ft standard wheelchair ramp, which has a lip that sits securely over the frame for wheelchair transfer